Transferring money between two accounts using a driver and blueprint class

[Samuel King]

Basically this is the assignment:
Modify the Account class to provide a service that allows funds to be transferred from one account to another.
Note that a transfer can be thought of as withdrawing money from one account and depositing to another (for full credit, have your transfer method invoke the withdraw and deposit methods appropriately).
Modify the main method of the Transactions class to demonstrate this new service.
Here's a prototype / header for the new transfer method of the Account class:
public void transfer (Account acctToWithdrawFrom, double amountToTransfer, double fee)
// NB: The fee is charged to the account from which the amount is withdrawn.


i've add

tedBalance = acct1.transfer(acct3, 250.0, 21.0); 
System.out.println ("Ted balance after withdrawal: " + );
System.out.println ("Edward balance after deposit: " + );

to the driver class/ transactions


and

public void transfer (Account acctToWithdrawFrom, double amountToTransfer, double fee)
{
this.withdraw (amountToTransfer, fee);
this.deposit (amountToTransfer);

}

to the blueprint class (accounts)

clearly it's wrong but an someone help me? Thanks in advance



Account class

//********************************************************************
//  Account.java       Author: Lewis/Loftus
//
//  Represents a bank account with basic services such as deposit
//  and withdraw.
//********************************************************************

import java.text.NumberFormat;

public class Account
{
   private static final double RATE = 0.035;  // interest rate of 3.5%

   private long acctNumber;
   private double balance;
   private String name;

   //-----------------------------------------------------------------
   //  Sets up the account by defining its owner, account number,
   //  and initial balance.
   //-----------------------------------------------------------------
   public Account (String owner, long accountNum, double initial)
   {
      this.name = owner;
      this.acctNumber = accountNum;
      this.balance = initial;
   } 

   //-----------------------------------------------------------------
   //  Deposits the specified amount into the account. Returns the
   //  new balance.
   //-----------------------------------------------------------------
   public double deposit (double amount)
   {
      this.balance = this.balance + amount;

      return this.balance;
   } 

   //-----------------------------------------------------------------
   //  Withdraws the specified amount from the account and applies
   //  the fee. Returns the new balance.
   //-----------------------------------------------------------------
   public double withdraw (double amount, double fee)
   {
      this.balance = this.balance - amount - fee;

      return this.balance;
   } 

   //-----------------------------------------------------------------
   //  Adds interest to the account and returns the new balance.
   //-----------------------------------------------------------------
   public double addInterest ()
   {
      this.balance += (this.balance * RATE);

      return this.balance;
   }

   //-----------------------------------------------------------------
   //  Returns the current balance of the account.
   //-----------------------------------------------------------------
   public double getBalance ()
   {
      return this.balance;
   }

   //-----------------------------------------------------------------
   //  Returns a one-line description of the account as a string.
   //-----------------------------------------------------------------
   public String toString ()
   {
      NumberFormat fmt = NumberFormat.getCurrencyInstance();

      return (this.acctNumber + "\t" + this.name + "\t" + fmt.format(this.balance));
   } 

} 

Transaction Class

//********************************************************************
//  Transactions.java       Author: Lewis/Loftus
//
//  Demonstrates the creation and use of multiple Account objects.
//********************************************************************

public class Transactions
{
   //-----------------------------------------------------------------
   //  Creates some bank accounts and requests various services.
   //-----------------------------------------------------------------
   public static void main (String[] args)
   {
      Account acct1 = new Account ("Ted Murphy", 72354, 102.56);
      Account acct2 = new Account ("Jane Smith", 69713, 40.00);
      Account acct3 = new Account ("Edward Demsey", 93757, 759.32);

      acct1.deposit (25.85);

      double smithBalance = acct2.deposit (500.00);
      System.out.println ("Smith balance after deposit: " +
                          smithBalance);

      System.out.println ("Smith balance after withdrawal: " + 
                          acct2.withdraw (430.75, 1.50));

      acct1.addInterest();
      acct2.addInterest();
      acct3.addInterest();

      System.out.println ();
      System.out.println (acct1);
      System.out.println (acct2);
      System.out.println (acct3);
   }
}

[Jason Bullers]

Samuel King wrote:

public void transfer (Account acctToWithdrawFrom, double amountToTransfer, double fee) {
    this.withdraw (amountToTransfer, fee);
    this.deposit (amountToTransfer);
}

...

clearly it's wrong but an someone help me? Thanks in advance

Look at the parameters of that method. You aren't using all of them. You probably should be if you want to transfer money between accounts.

Why do you think it's wrong? You haven't given any errors and I don't see any expected values anywhere in the code you posted, so what has you stumped?

[Samuel King]

I'm really not sure
Which parenthesis am I not using?

[Campbell Ritchie]

He didn't say parenthesis. He said parameter.